Hi-Fi amplifier refer to Marantz SC7S2 reference preamplifier,Up to 31 pairs 2SA970/2SC2240 transistors empolyeed on 6 HDAM modules.
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This is an amazing preamplifier refere to Marantz SC7S2 Hi-End pre amplifier, As we know the price for Marantz SC7S2 is very fancy, Now you could enjoy it for an increditable low price. This preamp using 31 pairs of 2SA970/2SC2240 transistors and more than one hundred resistors soldered on the board, Using Nover filter capacitor, ELNA and Nichicon coupling capacitor,There are six HDAM(High Defintion Amplifier Module) to amplfy the singnal.
20Hz square waveform testing
100HZ square waveform testing
1KHZ square waveform testing
20KHZ square waveform testing
50KHZ square waveform testing